英语语法：非谓语动词-请从语法角度分析这两句话为什么能这样合并.Although theseplastic bottles have been used already,they can be recycled.合并为：Used already,theseplastic bottles can be recycled.
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英语语法：非谓语动词-请从语法角度分析这两句话为什么能这样合并.Although theseplastic bottles have been used already,they can be recycled.合并为：Used already,theseplastic bottles can be recycled.
英语语法：非谓语动词-请从语法角度分析这两句话为什么能这样合并.
Although these
plastic bottles have been used already,they can be recycled.
合并为：Used already,these
plastic bottles can be recycled.
英语语法：非谓语动词-请从语法角度分析这两句话为什么能这样合并.Although theseplastic bottles have been used already,they can be recycled.合并为：Used already,theseplastic bottles can be recycled.
原句有连词although,并且连词后面有主谓,因此是状语从句
改为非谓语的思路：
Used already,的逻辑主语是plastic bottles,塑料瓶和使用之间是被动关系,因此用过去分词,used,
主句不变
因此,非谓语句子是：
Used already,these plastic bottles can be recycled.
也可以用上完成时：
having been used already,these plastic bottles can be recycled.
Although these plastic bottles have been used already, they can be recycled.
这是一句让步状语从句,尽管这些塑料瓶已经用过了,但是它们是可以回收的.
将状语的从句部分,改为非谓语动词形式,
主句的主语是plastic bottles (塑料瓶),那么从句部分的动词 use与plastic bottl...
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Although these plastic bottles have been used already, they can be recycled.
这是一句让步状语从句,尽管这些塑料瓶已经用过了,但是它们是可以回收的.
将状语的从句部分,改为非谓语动词形式,
主句的主语是plastic bottles (塑料瓶),那么从句部分的动词 use与plastic bottles 的关系是被动关系,所以就采用过去分词used的形式.
Used already, plastic bottles can be recycled.
收起
逻辑主语一致，再省略一些部分就可以了，